Spring-frame for bicycles or the like.



J. E. DUKELOW.

SPRING FRAME FOR BICYCLES OR THE LIKE.

APPLICATION FILED MAR. 5, 1910,.

Patented Apr. 20, 1915.

TfiE NORkIS PETERS CO" PHOrQ-LITHQ. WASHINGTON. 1

JOHN E. DUKELOW, OF CHICAGO, ILLINOIE).

SPRING-FRAME FOB, BICYCLES OR THE LIKE.

Application filed March 5, 1910.

To all whom it may concern Be it known that I, JOHN E. DUKELOW, acitizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Spring-Frames for Bicycles or the like, of'which the following is adescription.

My invention relates to means for resiliently mounting a supportingwheel upon the vehicle body.

The object of my invention is to provi e a simple, strong and durabledevice of tl e kind described wherein the wheel is rigidl supportedlaterally while resiliently hel against movement parallel to the plane fthe wheel. I

To this end my invention consists in the novel construction, arrangementand combination of partsherein shown and described and more particularlypointed out in the claims. 1

In the accompanying drawings wherein like or similar referencecharacters indicate like or corresponding parts: Figure 1 is a sideelevation of a motorcycle equipped with my invention. Fig. 2, is anenlarged sectional detail of the wheel supporting mechanism takensubstantially on line 22 of Fig. 3. Fig. 3, is a plan view of the partsshown in Fig. 2. Fig. 1, is a fragmentary section taken substantially online H of Fig. 2.

In the drawings for the purpose of illustration, my device is shownapplied to the rear wheel of a motorcycle, the main frame or body 1, ofwhich is constructed in substantially the usual manner, having a frontwheel 2 mounted in the front fork 3, with handle bars a for controllingits position and guiding the vehicle.

A. motor 5 is mounted upon the frame 1 and a saddle 6 is provided uponwhich the operator sits to control the device, all of said parts beingconstructed and arranged in the usual or any desired manner.

The rear wheel 7 is alsopreferably of the usual construction with theends of its axle rigidly secured near the free ends 8 of a bifurcatedauxiliary frame, which is pivotally attached intermediate its ends to apair of rearwardly extended bifurcated members 11 and 12 upon the mainframe 1.

The member 11 is clearly shown in Fig. 8,

. of the drawings and consists of a pair of Specification of LettersPatent.

Patented Apr. 20, 1915.

Serial No. 547,616.

substantially similar side pieces, each rigidly i at 10.

In the form shown the auxiliary frame 9 is bifurcated at both ends as at8 and 15 with the planes of the forked portions intersecting each otherat substantially right angles along the center line of the frame. Thefork 8 at the outer end of the frame 9 is arranged to receive the rim ofthe wheel 7 between the fork members and permit it to freely rotate,while the same is firmly supported in position upon its axle, both endsof which are rigidly secured to the frame. The fork 15 at the inner endof the frame is arranged to loosely embrace the transverse bar 1 1 ofthe frame 1. Suitable means are provided to cooperate with the frames 1and 9 to resiliently maintain the same in their proper relativepositions. As shown the bar 1 1 is provided with a suitable cup orsocket 16 upon its upper and lower faces and a similar cup or socket 17is adjustably secured to the inner faces of the fork members 15 of theauxiliary frame 9 by suitable adjusting screws 18 or equivalent means.The several parts are so arranged that each pair of sockets 16 and 17cooperate to receive a coil spring 19 or other suitable means betweenthem to resiliently hold the frame 9 in its proper relation to theframe 1. .Vhen thus constructed it is obvious that the adjusting screws18 may be operated to secure any desired compression of the springs 19and to partially control the position of the frame 9 upon the frame 1.In the form shown, also a bolt or stay 20 or other suitable means isprovided to maintain the members of the fork 15 in position and preventtheir spreading under the pressure of the springs 19 when in service.

The operation of my device is believed to be evident from the foregoingspecification and drawings, and no further description is necessary.

It is obvious that various immaterial modifications be made in my devicewithout departing from the spirit of my invention, hence I do not wishto be understood as limiting myself to the exact form and constructionshown.

lVhat I claim as new and desire to secure by Letters Patent is:

1. In a device of the kind described, a

main frame, an auxiliary frame pivotally mounted upon an extremity ofsaid main frame and adapted to support a wheel in position, and extendoutward beyond the rim of said wheel in combination with a plurality ofopposed means cooperating with said mainframe and one end of saidauxiliary frame to resiliently maintain said auxiliary frame inposition.

2. In a device of the kind described, a main frame an auxiliary framepivotally attached intermediate its ends'upon the extremity of said mainframeand adapted to support a wheel in position and extend outwardbeyond the rim'of said wheel, in combination with a plurality ofopposing .and substantially independent means cooperating with said mainframe and one end of said auxiliary frame to resiliently maintain saidauxiliary frame in position.

' 3.111 a vehiclebody, a forked main frame, an auxiliary frame mountedbetween the fork arms of said main frame and adapted to support a wheelin position and extend outward beyond. the rim of said wheel, in

combination with" a plurality of opposing and substantially independentmeans coop erating with said main frame and one end of said auxiliaryframe to resiliently maintain said auxiliary frame in position.

at. In a vehicle body, a main frame, an

. auxiliary frame forked at both ends mounted upon said main frame andadapted to receive and support a wheel between one pair of its forkarms, in combination with means positioned between the other pair offork arms adapted to engage said main frame to resiliently maintain saidauxiliary frame in position and resist its movement in either direction.

5. In a vehicle body, a main frame, a forked auxiliary frame pivotallymounted upon an extremity of said main frame with one endadapted toengage both ends of an axle to support a wheel in position, incombination with a plurality of opposing and substantially independentmeans cooperating with said main frame and one end of said auxiliaryframe to resiliently maintain SHJIClELUXlllZLIY frame in position.

6. In a vehicle body a forked main frame,

a forked auxiliary frame pivotally mounted between the forked arms ofsaid main frame with one end adapted to engage both ends of an axle tosupport a wheel in position, in combination with a plurality of opposingand substantially independent means cooperating with sa d main frame andone end of said auxiliary frame to resiliently main tain said auxiliaryframe in position.

7. In a vehicle body, a main frame, a forked auxiliary frame attached tosaid main frame and adapted to support a wheel in position, with a partof said main frame movably positioned between the fork arms of saidauxiliary frame, in combination with means positioned between the forkarms of said auxlhary frame on opposite sidesof the part of said mainframe adapted toresiliently maintain said sition. p

"8. Ina vehicle body, a main frame, a forked auxiliary framepivotally'mounted upon said main frame and adapted to sup-' auxiliaryframe in po- 7 port a wheel in position, with a part of said mainframemovably positioned between the fork arms of said auxlllary frame,in com b'nation with a plurality of substantially in d pendent meanspositioned between the fork arms of said auxiliary frame on opposiltesides of a partof said main frame adapted to operate in opposition toeach other to resiliently maintain said auxiliary frame in position.

9. In a vehicle body, a forked main frame,

a forked auxiliary frame pivotally mounted between the fork arms of saidmain frame adapted to support a Wheel infposition, with a part of said}main frame movably positioned between the fork arms of said auxiliaryframe, in combination with means positioned between the fork armsof saidauxiliary frame on opposite sides of said main frame adapted toresiliently resist the movement of said auxiliary frame in eitherdirection.

10. In a vehicle body, a forked main frame, an auxiliary frame forked,at both ends and pivotally mounted between the fork arms'of said mainframe and adapted to receive a wheel between one pair of its fork armsand support the'same in position and with a part of said main framemovably positioned between the other fork arms of said auxiliary frame,in combination with means positioned between the fork arms of saidauxiliary frame and the "part of the main frame cooperating therewith toresiliently resist the movement of saidauxiliary frame in eitherdirection.

11. In a vehicle body, a forked main cooperating part of said main frameto resiliently resist any movement of said auxiliary frame in eitherdirection.

12. In a vehicle body, a forked main frame, an auxiliary frame forked atboth ends, and pivotally mounted upon said main frame with a part ofsaid main frame movably positioned between the fork arms at one end ofsaid auxiliary frame, the fork arms at the opposite end of saidauxiliary frame being adapted to engage both ends of an axle to supporta wheel in position, in combination with means interposed between theforked parts at one end of said auxiliary frame and said main frameadapted to resiliently maintain said auxiliary frame in position.

13. In a vehicle body, a forked main frame, an auxiliary frame forked atboth ends and pivotally mounted intermediate its ends between the forkarms upon said main frame, and adapted to support a wheel in positionbetween one pair of its fork ar s in combination with means positioned btween the fork arms at the opposite end of said auxiliary frame andengaging the opposite sides of a part of said main frame to resilientlyresist the movement of said auxiliary frame in either direction.

14:. In a vehicle body, a forked main frame, an auxiliary frame forkedat both ends and pivotally mounted intermediate its ends between theends of the fork arms of said main frame, the fork at one end of saidauxiliary frame being arranged to support a Wheel in position, incombination with means positioned between the fork arms at the oppositeend of said auxiliary frame and engaging the opposite sides of a part ofsaid main frame positioned between the fork arms to resiliently resistthe movement of said auxiliary frame in either direction.

In testimony whereof, I have hereunto signed my name in the presence oftwo subscribing witnesses.

JOHN E. DUKELOW.

Witnesses:

BURTON U. HILLs, BLANCHE CHALMERs.

Copies of this patent may be obtained for five eerits each, byaddressing the Commissioner of Patents, Washington, D. 0'.

